Cadillac Lyriq 2025 — technical service bulletin
Bulletin N25-250378 (652.30) · NHTSA communication 11021073 · issued Jul 31, 2025
Technical service bulletin
communication type
Unknown / Other
component
2025
model years
1
vehicle entries
Official summary
GM Update 652.30 •Improvements to vehicle diagnostics. •Fixes to preserve battery life and improve charging. •Fixes to address issues with shifting. •Fixes for vehicle airflow in icy conditions. •Improvements to HVAC compressor performance. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.